4G features maximum tension and a cushioned feel on impact, lending itself to excellent playability and adaptability to the modern game defined by power and spin. Boasting the elements of a control string minus the tension loss and discomfort of early polyester strings, 4G sets the standard for players craving precision. Used by many tour players, including the Williams sisters and Grigor Dimitrov. Molecular chains strategically aligned in a parallel fashion to maximize tension maintenance. Comprised of Luxilon's famous poly-ether-ether and sprinkled with nucleates for strength and flexibility. Each set individually numbered for quality assurance. Completely impervious to atmospheric conditions such as moisture.